Something

<?php
ini_set("memory_limit","128M");
ini_set("include_path", ".:/usr/local/php/fooglue/libs:../src:../wwwroot:../conf");

$current_image_path = "../wwwroot/images/covers/";
$new_image_path = "../wwwroot/newimages/covers/";

include_once "com/dragonflymc/smartmart/data/ProductDAO.php";
include_once "org/fooglue/kernel/DataAccessObject.php";
include_once "org/fooglue/database/MySQLUtils.php";

$GLOBALS["CONFIG_FILE"] = "wwwroot-config.ini";
$conn = DataAccessObject::getConnection();

$sql = "select p.product_id
                        from tbl_product p
                        where is_disabled = 0";

$products = selectColumn($conn, $sql);
$productDAO = new ProductDAO();

DataAccessObject::close();

$numprods = count($products);
$counter = 0;

foreach($products as $product) {

        $counter++;
        echo "processing product id " . $product . " number ${counter} of ${numprods}\n";
 
  $prodDetails = $productDAO->selectProductDetails($product);
  $isbn10 = $prodDetails->getIsbn10();
     
  $giffile = $isbn10 . ".gif";
  $jpgfile = $isbn10 . ".jpg";
  $newjpg = $isbn10 . ".jpg";
  $smallnewjpg = $isbn10 . "_small.jpg";
  
  $folder = $new_image_path . substr($isbn10, 0, 3) . ""; 
  $c_folder = $current_image_path . substr($isbn10, 0, 2) ."";

  if (!is_dir($folder)) {
    mkdir($folder);
  }
  if (file_exists($c_folder . "/" . $giffile)) {
    
    $old = $c_folder . "/" . $giffile;
    $new = $folder . $newjpg;
    $small = $folder . $smallnewjpg;
    
    $command = exec("/usr/bin/convert {$old} {$new}");
    $command = exec("/usr/bin/convert -scale x100 {$old} {$small}");  
  }
  else if(file_exists($c_folder . "/" . $jpgfile)) {
    
    $old = $c_folder . "/" . $giffile;
    $new = $folder . $newjpg;
    $small = $folder . $smallnewjpg;
        
    $command =  exec("/usr/bin/convert {$old} {$new}");    
    $command = exec("/usr/bin/convert -scale x100 {$old} {$small}");
  }
}

?>